A-Level Biology Lipids

AQA A level Biology Specificaton

Unit 1 Biological Molecules
Topic:
1.3 Lipids

This lesson covers:
Triglycerides and phospholipids are two groups of lipid
Triglycerides are formed by the condensation of one molecule of glycerol and three molecules of fatty acid
A condensation reaction between glycerol and a fatty acid (RCOOH) forms an ester bond
The R-group of a fatty acid may be saturated or unsaturated
In phospholipids, one of the fatty acids of a triglyceride is substituted by a phosphate-containing group
The different properties of triglycerides and phospholipids related to their different structures
The emulsion test for lipids
Students should be able to:
recognise, from diagrams, saturated and unsaturated fatty acids
explain the different properties of triglycerides and phospholipids.

To complete the lesson provide students with related past exam questions